K-Ci & JoJo is an American R&B duo, consisting of brothers Cedric "K-Ci" Hailey (born September 2, 1969) and Joel "JoJo" Hailey (born June 10, 1971). Natives of Monroe, North Carolina, they are also the lead singers of the chart-topping R&B group Jodeci with the DeGrate brothers—Donald (better known as DeVante Swing) and Mr.Dalvin.